Intermittent motion for moving-picture machines.



J. u. COLLINS.4

' -I'NTERMITTENT'MOTIQN FOR MOVING PICTURE MACHINES.

APPLIUATIQN FILED APR.19, 191i.

` Patented Apr. 15, 1913.

UNITED srn'rns *PATENT oFFiGE.

r Jorma. comme, or Nrw Yoan, N. Y., AssioNon or cnn-Haar ro or'ro r. MILLER, or

, NEW vomi, 1v.` Y.

INTERMITTENT MOTION FOR MOVING-PICTURE MACHINES.

nosearch" Specification of Letters Patent.

i Patented Apr. 15,1913.

Application led April 19, 1912. Serial No. 691,810.

To all 'whom t may concern:

. 4Be it\ known that I, JOHN C. CoLL1Nsa citizen ofthe United States, and a resident ofthe city of New York, borough of, Man- 5 hattan, in the county and State of New York, have invented a new and Im roved Intermittent Motion for Movingicture Machines, of which the following 1s a full, clear, and `exact description. This invention relates to improvements in moving picture machines, and particularly to an intermittent motion mechanism there- .improved structure for operating the intermittent sprocketwheel.

Another object of the invention is to provide an operating wheel. connected with the intermittent sprocket wheel of a moving pic-- ture machine arranged to co-act with a ro-` tat-ing cam member designed to successively enga epins projecting ror'the operating Whee so as Ato intermittentlyfeed forwar the intermittent s rocket wheel, the cam member continuous moving;

In carrying out t e objects of thainvention, a moving picture machine of any de- "red construction may be provided, having i the usual `feedin and take up sprocket wheels, and also t e intermittent wheel.

Connected with the intermittent sprocket ,wheel so as to operate the same in timed relationship `to the remainin sprocket wheels is an intermittent lfee or drive mechanism `formingthe subject matter of` the invention and comprising a wheel having a plurality of pins or proJections extending therefrom co-acting with a continuously rotating cam member wheel. The continu* ously rotating camv member is connected with the usual gearing designed to drive the feed sprocket and take up sprocket so as to rotate at such a speed as to cause a complete rotation of the intermittent sprocket for each complete rotation of either of` the re-` maining `sprockets said rotation, however,

being by intermittent motions. Apractical embodiment of the invention is represented in the accompanying drawings forming a part of this speciiication, in -which similar characters of reference indicate corresponding parts in all the views. v

Figure 1 is a fragmentary view partially in. section of a moving picture `machine showing an embsodiment of the invention ap- 5.5 plied thereto, said embodiment being shown for, and has for an object to, provide an .moving the film past x also 1n section; Fi 2-1s a fragmentary sectional view throug Fig. 1 approximately on the line 22; and Fig. 3 is a view similar to Fig. 2, except that the part is shown in a diierent positlon. so Referrin to the accompanyin drawings by numera s, 1 indicates a suita le framework. f any desired kind arranged to carry the main `drivin gear 2 and the gears 3 and 4 connected wit the feed sprocket and take 65 up sprocket wheels. The main driving gear 2 is arranged so as tomesh with a pinion 5 formed integral with or rigidly secured to a cam wheel 6. The cam 'wheel 6 is arranged t`o act upon an intermittent driving element 7 rigidly seciiredas for instance by a sci-ew 8, to the shaft 9 of the intermittent sprocket 10. The construction and operation of the cam wheel 6 and the intermittent driving element 7 may be seen more clearly from Figs. 2 and 75 3 wherein it will be noted that thecam wheel 6; is l rovided with an annular groove 11 merging into grooves or passageways 412 and 13.` Arrange on one side of the passageway 12 is a wall 14 which acts as a cam when 80 the machine is being roperly operated for tiie window 15. If for any reason the machine should be operated backward the cam face 16 would operate iiiA 'a reverse direction to the caml face or wall,

14 for engaging the respective pins 17. itt 19, and 20. In the drawings only fom'` pins, areshownr.on the intermittent driving ein# ment 7 asulthe cam wheel 6 is geared at :i ratio of fq'rto one in respect to the driving 90 element-*XIIz Ira greater or less number of pins was found desirable the samelcould'be provided and a proper change in t e ratio of revolutionsI of the cam w eel` 6 could be made. In the construction shown the cam 95 wheel 6 is adapted to rotate four times to one rotation of-the intermittent driving `element 7 and consequently "four times to one revolution of ythe intermittent sprocket 10.

In operating the device it will be evident lthat the point 21 will engage the pin 18 for lment 7 and the intermittent sprocket 10. a

one-fourth revolution. As soon as the pin 1 8 `has moved to substantially the position 110 madea su stantiallyy complete Vrevolution.A

On `the con-ipleting of the revolution of the cam swlieely, v,the pin 18 will move out through th ,lpassageway 13, as shown by the position of the pin 17fin Fig. 3 at the same vtime that ih 19 moves through the passageway 12 in the annular channel 11. From this 'itw'illV .e seen that there is only one pin 4in the cha passing o g gill ataf time as one pin is discharged u the movement of the other pin `by 'the ca Fffacje 14. i l

',In order to positively cause a proper rihgchanpei 11 past the pin 17 Awhen th fpm/'18" is; being folrced into the annular oov'e 11, the outer surface of the lcaml whe Ii 6 i` beveled at 21,', s more clearly Figi. 2. A similar bevel 22 is proacei'it the passageway-13 so as to pro er operation wheh the ymachine" ein lmoved in areverse direction. ,It will/ e noted that by reason of the intere /of 4"hecain wheel 6/ with the main l ear a continuous nlovement of the el will result as ong as the machmeL 's/in loperation', which, in turn will re- Ysult ;=/1 fa intermittent `ovement of the sprocgit eel in propl timed relation- -shiy th movement of e feedsprocket :fan t vfeta e'upeprocket. Also itwillbe obthat thej-movement of the intermitro'ket lfis caused by a positivedrive theitension of springs or other, weich `ilmiy vary the quickness o f the `t of fthe sprocket. ijsiinter vi'itentnmoti/on device has been ibed in iiia'spect to a /moving pictureI mafasignd to projectpictu-res in a wellnianner, but 1t lis to 4be understood i t `e de/vice could 'used equally .well w h a/cam'era as' with a.moving picture'prml l tor /a'nd it ,is desired that it shall be unders ded, that/fIl'iWhere/the ex ression moving ture lmaciiinejisi; inserte" 5 a moving pic. -l re` machine, 'camj'era,`l or other similar def ce"is inteiidedjtobecovered. v

'Havingtfithus" described my invention 4I.

` ,"lairnas new andfdesire to secure by Letters A 1L'- Infan intermittent `'motion `for moving icture machines,v an intermittent wheel' l ormed Vwith a plurality of pins projecting from ithe vface thereof, and a cam wheel hav? ling a substantially annular groove adapted ztosuccessively receive. said pins' for moving Ithe same a. predetermined distanceA on veach lf rotationof the cam wheel.

2. In an intermittent motion for moving picture machines, a pin wheel `formed with aplurality 'of pins, and a cam for engaging `sald pins successively and moving the same arranged grooves extendin `side of each of the tangentially arranged.

' remaining .co-acting with said pins for" movin 'same 1n order to glve said diskl an interface of saiddisk,a `cam wheellcofacting;'withy .said pinsvyformoving the same in orderllto alpredetermined distance on each engage' ment, said cam comprising ai body portion having a. substantially annular groove diverging into inclined radialways, said ways substantially meeting at theA p'eriphery'of the wheel, whereby said groove is s ubstan-m tially continuous `and upon the rotation of said cam said pinswill successively enter one of said ways and will renfain in saidl groove until the cam has been coinpletel'yi rotated, whereupon the pins will vbe forced out of the remaining radial way.

3. In an intermittent motion -for moving picture. machines, the combination of apin wheel,and a continuously operating cam for engaging and moving the pins' on said pin wheel, said cam being formed with a substantially annular groove merginginto lbeveled ways whereby cam facesl are formed, saidr cam faces lbeing adapted to engage said pins successively for movingI said pins 'into said annular groove whereby` upon a complete revolutioh of said cam wheel said pin ,wheel Vwill be stepped forward the distance of space between adjacent pins. I

4. In an intermittent motion for moving picture machines, a pin wheel provided with a plurality of pins, a cam wheel formed with ,.7 y

an annular groove merging into tangentially v 'to the surface ib ofthe wheel at adjacent points, whereby an entrance and an exit opening is provided j for said annular groove, the surface of said 4 cam .wheel being chamfered off vupon each grooves, whereby said pins may be forced one at a time into said annular groove, the pin positively being held out of said annular groove. 5. AIn an intermittent' motion for-moving` picture machines, the combination of arotat-able disk, a pluralityof pins extending from the .face of-'saiddisk and .a cam'wheel the mittent metiera/said -cam `wheel being pro-2. videdon one face with a substantially;y ane 'nular groove 'and a pair of inclined grooves radiating fromsaidl annular roove'whereby engagefsaidpin's upon the rotation of 'the ins whenthe cam wheel is moved in one rec-. v tion, and the opposite -cain lfacel engaging-,v` said pins when the'camwhx'eelis .mOvedv in 1 an opposite direction.

tabledisk, a plurality of pins 'arranged ,)Illi'fhey 125 givesaid dislra'n intermittent' motion, said ,y cam wheel being formed with a substantially annular groove anda pair ofy inclined rafn dially positionedA groovesmerging into saidv annular groove wherebys'aid pins aresiic'- .130

lthe i ,fa-i 4 6.1ml an intermittent 'drive for movin f vpicture'machines, the combinatlon 'of aro- .cessively iac'cbminodatedin the face of 'said In testimony whereof I have signed my cam wheel und are successively moved step name to this specification in the `presence of `1o by step in a rotary direction, the cam wheel two subscribing witnesses. at thepoint where said radially ositioned y y JOHNC COLLINS grooves merge into the periphery sing beveled for `causing the cam surface of said rag Witnesses: dially positioned grooves to properly `en- A. L. KITGHIN,

gage saidv pins. y PHILIP D. ROLLHAUB. 

